A heatwave of the intensity of the June event in the Pacific Northwest would have been virtually impossible without global warming. But that doesn't mean such events will become common any time soon.
Record-warm temperatures over land combined with a sixth-warmest June for the oceans to make June 2021 the fifth-warmest June since records began in 1880.
June precipitation was average across the country, a balancing out of dryness in the West and wetness in the Lower Mississippi, Eastern Seaboard, and Great Lakes.
